API Pipes

API Pipes


API pipe is a carbon steel pipe that is manufactured as per the specification of the American Petroleum Institute (API). Steel API pipes are produced in a welded and seamless form, which are typically used in pipeline transportation systems in the petroleum and natural gas industries. API pipes are suitable for the transportation of gas, oil and water.


Uses of API pipe include energy industries, power plants, engineering, automotive, industrial, petroleum, petrochemical, natural gas industries and waterworks.


The most common grade of API pipes is API 5L. The API 5L specification provides standards for pipe suitable for use in conveying gas, water, and oil in the natural gas and oil industries. Grade API 5L also covers both seamless and welded steel line pipes. It includes plain-end, threaded-end, belled-end pipe, through-the-flowline (TFL) pipe, and pipe with ends prepared for use with special couplings. Apart from being inexpensive, coated API pipes are commonly used in pipelines as they are resistant to crack propagation.

Common Grades, Sizes and Specifi­cations

GradesNominal SizeOuter DiameterWall Thickness
API 5LUp to 36inUp to 36inFrom 1.7mm

Other API pipe sizes and grades are available upon request. You can request to cut your API pipes down to size.

Kian Huat Metal

Kian Huat Metal is the Singapore’s leading API pipe supplier with a wide distribution network that spans over 20 countries in the Asia Pacific region. With over 30 years of experience, we provide the very best quality products, prompt delivery and highest standard of services at competitive prices. At Kian Huat Metal, we supply an extensive range of metals for various applications. Our inventory includes: stainless steel, structural steel, mild steel, galvanized steel, aluminium, brass, bronze and copper. Our hot rolled and cold rolled steel is available in a wide range of shapes including: bars, rods, universal beams, universal columns, pipes, hollow sections, channels, sheets and plates. We can cut according to your exact specifications.

quality assurance

We ensure product quality and consistency through best practices and quality control that conform to local and international standards.

on time delivery

Our highly skilled team of drivers will ensure your orders are delivered within the time requested.

one stop shop

We offer a competitively priced and extensive range of steel products for all industries.

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If you have any questions related to our products or inquiry, we are happy to assist you. We will answer you via email as soon as possible. If you prefer to be contacted by phone, please leave your phone number. *